importpyodbccnxn=pyodbc.connect('DSN=TAOS_DSN;UID=root;PWD=taosdata',autocommit=True)cnxn.setdecoding(pyodbc.SQL_CHAR,encoding='utf-8')#cnxn.setdecoding(pyodbc.SQL_WCHAR, encoding='utf-8')#cnxn.setencoding(encoding='utf-8')cursor=cnxn.cursor()cursor.execute("SELECT * from db.t")row=cursor.fetchone()whilerow:print(row)row=cursor.fetchone()